Scuba diving schools in Barbados

I'm going to be in Barbados for ten days and want to scuba dive, I don't have a scuba licence so are theregood scuba diving schools on the island? How much are the courses usually, and how many days does it take to get your licence - would I have enough time in ten days to do the course and then still be able to go out for plenty of dives? Which kind of licence is offered by the different schools - NAUI or PADI - and which would you recommend is better to do?